公开(公告)号：WO0233442A3

公开(公告)日：2003-01-16

申请号：PCT/US0132226

申请日：2001-10-17

Applicant: WESTERNGECO LLC

Inventor： MOERIG RAINER ,  BARR FREDERICK J ,  NYLAND DAVID LEE ,  SITTON GARY ARTHUR

IPC: G01V1/00 ,  G01V1/37

CPC classification number: G01V1/005 ,  G01V1/375 ,  G01V2210/3246

Abstract: A method of seismic surveying using one or more vibrational seismic energy sources activated by sweep signals. The highest order harmonic that has sufficient strength to cause significant harmonic distortion of a sweep segment is determined. A number of sweep segments in excess of the number of sources is selected. Initial phase angles are selected for each sweep segment of each seismic energy source so that substantially all harmonics up to and including the highest order harmonic are suppressed. Using cascaded sweeps, seismic data are acquired and processed to substantially attenuate harmonics upto the selected order.

Abstract translation: 一种使用一个或多个由扫描信号激活的振动地震能量的地震勘测方法。 确定具有足够强度以引起扫描段的显着谐波失真的最高阶谐波。 选择超过源数量的多个扫描段。 为每个地震能量源的每个扫描段选择初始相位角，以便抑制直到并包括最高次谐波的基本上所有的谐波。 使用级联扫描，获取并处理地震数据，以基本上衰减到所选顺序的谐波。